Looking for a Japan-focused SEO partner that aligns search performance with business results?
Japan’s search landscape rewards agencies that can fuse meticulous keyword research with culturally attuned content and precision advertising.
In this guide, we spotlight eight standout firms—from tool-driven innovators like CINC and Faber Company to full-funnel strategists such as CoDigital and Nyle—that have proven they can move the revenue needle for domestic and international brands alike.
Read on for a concise, side-by-side view of their strengths, specialties, and why each might be the catalyst for your next stage of growth in Japan.
| Company Name | Primary Business / Features |
| CoDigital, inc. | Provides digital marketing support, including SEO consulting, content creation, and digital advertising. Strength lies in crafting efficient strategies that integrate advertising and SEO. |
| CINC Corp. | Centers its business on providing “Keywordmap,” an in-house developed SEO and content marketing tool, along with consulting and content creation support. Strong focus on data analytics. |
| Nyle Inc. | Provides comprehensive digital marketing support, including SEO consulting, content creation, and website improvement. Has an extensive track record, especially in media management and content marketing. |
| Faber Company Inc. | Primarily develops and provides “MIERUCA,” an SEO and content marketing support tool. Specializes in visualizing user insights to support corporate web marketing. |
| GMO TECH, Inc. | Offers a wide range of web acquisition services, including SEO, MEO (Map Engine Optimization), and affiliate advertising. A member of the GMO Internet Group. |
| Speee Inc. | Utilizes SEO expertise gained from operating comparison websites in lifestyle sectors like real estate and home renovation to support corporate digital transformation (DX). |
| GEOCODE CO.,LTD. | Has been providing SEO services since its founding, offering one-stop solutions from website production and SEO to web advertising management. Possesses a wealth of experience. |
| Full Speed Inc. | Provides SEO consulting, content marketing, and social media marketing. Has experience supporting a wide range of industries. |